[Feature] Add option to disable web client.

[micash545]

Just add ENV variable to disable web client serving in server.

[Vera2016]

if you are using nginx now, try follwing code.

`
#immich
server {
listen 2238 ssl;
server_name your_domain.com;
ssl_certificate .../fullchain.pem;
ssl_certificate_key .../private.key;
# set timeout
proxy_read_timeout 600s;
proxy_send_timeout 600s;
send_timeout 600s;
client_max_body_size 50000M;
# Set headers
proxy_set_header Host $host;
location /api {
proxy_pass http://192.168.1.1:2283; // immich server
}
location /.well-known {
proxy_pass http://192.168.1.1:2283; // immich server
}
location / {
proxy_pass http://127.0.0.1;
}
}

`